Glass blowing machine



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GLASS BLOG MACHINE Edward G. Bridges, Anderson, Ind., assignor, by mesne assignments, to Lynch Corporation, a corporation of Indiana Original application June 4, 1917, Serial No. 172,678. Divided and this application July 16, 1927, Serial No. 206,306. In Germany April 15,

I 49 Claims. (Cl. l.iQ-9) This invention relates to a machine for blowembodyingY the invention and designed for hand ing glass bottles and other articles and aims to feeding.

provide automatic means for completing ithe In said drawings: article from a drop` or gather or molten glass Fig. 1 is a plan view of the blank table and cothat may be fed to the machine automatically or Operating parts. 5

by a workman. One of its objects is to provide a Figla iS a COIIGSDODdiIig VieW 0f the blOW machine having separate tables mounted for rotable' and the corresponding parts.

tation and designed to carry the blank molds and Fig- 2 iS a Central Vertical section on line 2 2 the blow molds respectively, said molds cooperatthrough the structure shown in Fig. 1.

ing so as to transfer a blank from the blank mold Fig. 2a is a Central vertical section on line 10 to ablow mom, 2a-2a through the structure shown in Fig. 1a.

A further object is to provide a machine of this Fig. 3 is a section on line 3'-3 of Fig. 1. character in which the blank is carried to a point Fig. 4 iS a section on line -d 0f Fig. 1. where the transfer is effected by the blow mold Fig. 5 is a section on line 5 5 of Fig. 1a.

on one table closing about said blank while it is. Fig 6 iS an elevation 0f the pedestal 0I' Stand 15 suspended by a neck ring. 0f the blank table.

A further object is to provide revoluble tables Fig. 7 is a. plan view of the structure shown in both of which receive power from an interposed Fig. 6. gear so that no loss of motion will occur as Fig- 8 iS a Section 0n line 9-9 0f Fig. 6.

would be the case should motion be transmitted Fig- 9 iS a Section 0D line |0-0 0f Fig. 6.

through either of the tables to the other. 10 iS a SeCtOn 0n line -ll 0f Fig. 7. 20

A still further object is to provide novel means Flg- 11 ls a Section 011 line |2|2 0f Fig. 7 for mounting the blank molds whereby said molds Flg- 12 l5 a Sect'lon 0n llne l3l3 0f Fig. 7. will be opened and closed and bodily inverted, Flg- 13 l? a' SCCIUH Qn 1111 |4-l4 of Fig. 7.

vand subsequently restored to their normal posi- Flg' 14 1S an eleva'tlon of the blow head guide 25 at th rst station of the blank mold, oglhaamnItatlon of thetable Fig. 15 is a rear elevation of the holding block Another Object is to provide pneumatic means of one of the blank molds, and portions of the adcontrolled by the inversion and restoration of lant xoilds cooperating thellewith' the blank for homing the members of the blank sho ,di a' eclm o une 1 in Fig' 2 and 30 mold closed and for opening them at predeterng e s at ona'ry valve at the delivery sta` tion of the blank mold. mined -points during the progress of the mold Fig. 17 is a section through the cam actual with the rotatlilg tablel. valve at the transfer station of the blow table, A further obJect of the invention is to improve said section being taken on the une 8 .8 of

3 the construction of the mold mechanisms and Fig 2a 35 actuating means therefor to Simplify the 211170- Fig. 18 is a diagrammatic view of the complete y matic transfer of a glass parison from a blank machine, the parts being arranged and shown in mold to a blow mold. sectional elevation. 40 A still further object of the invention is to im- The subject matter of the present invention 40 prove automatic glassware forming machines relates primarily to the construction and mountwhereby the glass parison may be transferred mg 0f the blank molds and blow molds' als Well from a blank mold to, a blow mold and be re as the manipulation of them to permit the autotained therein for subsequent iinal blowing in ma'tlc transfer of the glass parison from one to said blow mold, permitting a reheating time in- Phe other- In the Case of a two'table machine 45 terval between the transfer and the nal blowing l' e' wherein .the blank and blow molds are* operation, during which the chilled skin of the mounlsed on separate laterally spaced tables this parison may be reheated to satisfactory blow permits of the iinal blowing of the bottle at a. ing temperature. position beyond the transfer position.

other minor objects of .the invention Wm The invention 1s illustrated in a machine cor- 50 l i responding exactly to the machine illustrated in appear. to those skilled 1n the artfrom a conmy copendjng application with James W Lynch. sideration of the following description of the 111- tiled June 4, 1917, Serial No. 172,678, now Patent vention when considered 1n connectlon with the No. 1,788,312, granted January 6, 1931, of which accompanying drawings illustrating a machine the present application is a division, and'reter- 55 ence is made to that patent for a more complete illustration of Ycertain details of construction, such as the parison fabricating devices, the operating mechanism, and the takeout mechanism, referred to hereinbut which do not form a part of the subject matter claimed herein.

The present invention is preferably embodied in a machine of the two-table type, such as illustrated herein. As illustrated, such machine may be mounted on a base I, at oneend of ywhich is erected a pedestal or column 2 designed to support a blank mold table or carrier 3. A similar pedestal or column 4 is erected on the base adjacent the other end thereof and is designed. to support the blow mold table 5. The blank table 3 is adapted to carry several blank molds hereinafter more fully described and which can be of any number desired. In the present instance six of these blank molds have been connected to the table 3, and each of the blank molds, during one complete rotation of theA blank table, is adapted to stop at six distinct stations indicated at I, II, III, IV, V, and VI, respectively. All of the blank molds are of the same construction,-

and they all operate successively in the same manner so that in describing the construction and operation of one mold it is to be understood that the'same description applies to all of the molds on the blank table.

Blank table and support ber 6 having separate air 4passages 'I and 8 extending downwardly therethrough and thence downwardly and inwardly within the table so as to be opened and closed at certain points during the rotation of the table about the stand or pedestal 2 by the wall of said pedestal.

Formed within the upper portion of the pedestal and in the same horizontal plane are three grooves 9, I and II, (see Figs. 2, 6, '7 and 8) which are designed successively to register with the lower or inner end of the upper passage I during the rotation of the table. The groove* 9 is so located that it will register with the passage 'I for closing the blank mold just prior to its arrival at station I, while the blank mold is at said station I, and also during the movement of the blank mold from station I to station II. The groove I0 is adapted to register with the passage 1 immediately after the blank mold leaves station II. Passage I remains in communication with the groove I0 until just prior to the arrival of the blank mold at station III at which time the lower passage 8 comes into register with a. short lower groove I2 (Figs. 6, 'I and 9) in the stand or pedestal 2. This lower groove is in communication through an inclined passage I3 with the third upper groove II and remains in communication with the passage 8 until after the blank mold has left its station III and has almost reached its station IV. As the blank mold reaches its station V the upper passage 'I comes into communication with the groove II and this groove is in communication, through oblique passage I4 with the groove 9. The groove 9 is adapted to receive pressure through'a. vertical bore I5 and another vertical bore I6 is adapted to direct pressure into the groove I0. Thus it will be vseenthat when air under pressure is directed into these two bores, the uniform pressure of air will bemaintained in the grooves 9, Ill, II and Ii2.

When the blank mold is at station III the upper passage 'I will communicate with an exhaust `tore l1 (Fig. '7) formed in the stand or pedestal 2. Another exhaust bore I8 is formed in the stand or pedestal 2 and is adapted to register with the inner end of the lower passage 8 when the blank mold arrives at its station V.

Secured to and extending upwardly from the stand or pedestal-2 is a tubular extension I9 constituting a cam track (see Fig. 2) there being formed on or secured to this extension along a radial line extending between stations II and III a cam 20 (Fig. 16). Connected to this cam track on a radial line extending through station III of the blank mold is a. valve casing 2I in which a valve 22 is mounted to reciprocate, this valve being provided with an annular groove 23 near its outer end and which groove communicates with a central bore 24 .extending into the Valve from its inner end. Thus when pressure from the main air une is 0directed against the inner end of the valve through a pressure port 25, the valve will be shifted against the opposite end of its casing 2I and the stem 26 of the valve will be pressed outwardly from the surface of the track or extension I9. When the valve is in this position, the groove 23 is out of register with an outlet port 21 (see Fig. 18).

Formed with or connected to the upper end of the track or extension I 9'are oppositely extending segmental wings 28 and 29, (see Fig. 1) the wing 28 being arranged above the blank table 3 between stations V and VI while the peripheral portion of the wing 29 is arranged above the blank table 3 and extends over the space between stations II and III. Connected to or formed with the bottom face of the wing 28 (see Fig. 2) is an arcuate rack 30 while another rack 3| is arranged on the bottom face of the peripheral portion of the wing 29. The wing 29 has an extension 32 (see Fig. l) which is arranged back from the rack on the wing 29 and extends over the table 3 at station III. These wings are of course fixed relative to the stand or pedestal 2 and the racks serve as operating means for the revoluble cylinders as will be hereinafter pointed out, while the wing 29 constitutes a support for the portion of the transfer mechanism to be described hereinafter.

Blank mold inverting mechanism lower edge of av track 31 depending from the top portion of the extension I9.

Thus during this This boss portion of the movement of the blank mold about the stand or pedestal )2 the cylinder 33ycannot rotate about itslongitudinal axis and such rotation can only occur after the boss 36 has passed out of engagement with the lower edge of the track 37. Another similar depending track 38,

(see Fig. 2) extends downwardly from the upper portion of the extension I9 and located between stations III and V, and is adapted to be engaged by the other at face of the boss after the revoluble cylinder has been turned one half revolution as hereinafter described, thus to hold the revoluble cylinder against movement out of the position to which it has been turned.

Slidably mounted in the cylinder head is a plunger 39 (see Fig. 2) and this plunger-is adapted, when the blank mold is brought to station III, to aline with the stem 26 of valve 22, said plunger being pressed outwardly into the piston chamber 34 by coming against the cam 20 (see Fig. 16) just prior to the arrival of the plunger 39 at station III. Formed on or secured to the cylinder 33 close to the outer face of the bearing member 6 is a gear 48 adapted, during each complete rotation of the blank table to successively engage the racks 30 and 3|, it being understood that each rack is so proportioned relative to the gear that .it will cause the gear to make a one half revolution while passing from one end to the other of the rack. Extending from the outer face of the gear 40 (see Figs. 1 and 2) are upper and lower ears 4I and 42 and these ears are connected by a pivot pin 43 on which are mounted arms 44 extending from the opposed members of the blank mold. Pivotally connected to each of the arms 44 adjacent the center thereof and close t0 its mold member 45 is a link 46, and the two links of the mold being extended inwar-dly and attached to a cross head 41 which extends between the upper and lower ears 4I and 42. This cross head is attached at its center to the rod 48 of the piston 49 mounted to reciprocate in the cylinder chamber 34. An annular groove 58 is formed in the cylinder 33 and constantly communicates with the passage 1. A passage 5I extends longitudinally within the wall of cylinder 33 and connects the groove 50 with the inner end ofthe cylinder where it opens through a port into the inner end of the piston chamber 34. A port 52 is formed in the outer end portion of the cylinder 33 and is adapted, when the cylinder is rotated through 180, to come into register with the upper end of the passage 8 thus to direct air under pressure from said passage against the outer face of the piston 49. Y

. Assuming that air under pressure is supplied to the bores I5 and I6 (see Figs. 2, 6, 7, 12 and 13) and is thus distributed to the grooves as hereinbefore described, it will be apparent that when the blank mold arrives at station I the passage 1 and groove 9 will direct pressure by way of groove and passage 5I to the back face of the piston 45 with the result that said piston will be directed outwardly against the outer end of the chamber 34 and the links 46 will prem against the arms 44 to hold the mold members tightly together. As the blank mold moves from station I to station II the pressure against the piston 49 will be maintained through the groove 9. Immediately after the blank mold leaves station II the gear 40 will engage the rack 3l so as to rotate the cylinder through 180", thereby to invert the blank mold .pressure being maintained back of the piston 49 during this rotation through the annular groove 58. Just as the cylinder completes its half revol piston driven inwardly so as to pull on links 46 and move the mold members 45 apart. During this inward movement of the piston the passage 1 I has been brought into register with the exhaust into register with the exhaust bore I8 and the passage 1 comes into register with the groove II so that pressure is directed from said groove II and the passage 1 to the back face of the piston 49 with the result that the members of the blank mold are swung together and are maintained in this position while the mold is moving from position V to position I. Pressure is maintained against the piston while the mold is moving from position V to position VI and during this stage of the movement of the mold the gear 40 comes into mesh with the rack 36, thus causing a one half revolution of the cylinder 33 so that when the cylinder arrives at station I it will have the same position as when it started its cycle of movement.

Neck ring Pivotally mounted on one end portion of the pin 43 (see Figs. 1 and 2) are oppositely extending jaws 53 to the outer ends of which are attached segmental members 54 constituting the sections of the neck rings. These sections are adapted to close together at the neck end of the blank mold and are adapted to be surrounded by a portion of the blank mold as is usual in devices of this character. Connected to the jaws 53 between their ends are links 55 and these links are in turn attached to a cross head 56 which has a guide pin 51 slidably mounted in an opening 58 formed in the gear 40. A lug 59 projects from the cross head 56 and lextends downwardly when the mold is at station I but projects upwardly when the mold is at station III. When the lug and cross head are at their outermost positions, the links press against the jaws 53 and hold the members of the neck ring closed together, but when the l-ug 59 and its cross head are drawn inwardly the members of the neck rings are shifted away from each other.

Mounted on the extension 32 of the wing 29 at station III is a cylinder 60 containing a piston 6I from which projects a stem 62. Connected to the outer end of this stem is a spool 63 and this spool is designed to be held at its outermost position under normalconditions so that when the blank mold arrives at station III the lug 59 will enter the groove in the spool.

Mounted on the wing 29 is a valve casing 64, (see Figs. 2 and 18) this casing being provided with a pressure inlet port 65, exhaust ports 66 and 61, and outlet ports 68 and 69. The outlet port 68 is located between the inlet port 65 and the exhaust port 66, while the outlet port 69 is located between theinlet port 65 and the exhaust port 61. Constant pressure is directed against the port 65 and the outlet port 68 communicates with the inner end of the cylinder 60 through a passage 10. A passage 1I connects the outer end of the cylinder 60 to the outlet port 69.

A valve 12 is mounted to reciprocate within the casing 64 and has a centrally enlarged portion 13 adapted to normally close the port65 and also having enlarged end portions or heads. These heads are adapted to alternately close the exhaust ports 66 and 61. A pressure inlet port 14 is formed in thc inner end of the valve casing 64 and another pressure inlet port 15 is formed in the outer end of the valve casing. Thus it will be seen that when pressure is directed through port 14 against the valve 12, which action will take place when the mold reaches station III, the inlet port 65 will be placed in communication with the outlet port 69 while the outlet port 68 will be placed in communication with the exhaust port 66. Thus air under pressure will flow through the passage 1| and against the outer face of the piston 6|, forcing said piston inwardly and causing the spool to pull the lug 59 inwardly and move the members of the neck ring away from each other.

The foregoing operation is preferably so timed relative to the opening of the blank mold at station III that the members of the neck ring will not open out until after the members of the blank mold have become disengaged from the glass arti cle and the members of the blow mold hereinafter referred to have engaged the article.

It may be stated` at this time that when the members of the blank mold are moved apart at station III the piston 49 will strike the plunger 39 (Fig. 16) and force it against the stem 26 of valve 22 thus causing said valve to shift 'inwardly and bring the pressure inlet 25 into communication with the outlet port 21. 'I'his will control certain other operations as will be hereinafter pointed out.

Blow head The glass in the parison mold may be advantageously fabricated by rst compacting the charge around a mouth-forming pin mechanism at or adjacent the charging position and thereafter counterblowing the charge to form a hollow parison, as for example at station II.

The blank settling mechanism may be mounted on the base adjacent stationI on a standard 16 (see Fig. 3) having a laterally extending sleeve 11 in which is slidably mounted a post 18 which can be adjusted to any desired elevation and held'l by a set screw or in any other approved manner.

Mounted on the upper end of this post is a blow head table 19 containing a cylinder 80 in which a piston 8| is mounted to reciprocate. Arranged on one side of the cylinder 80 is a valve casing 82 which is provided, near each end, with an outlet port (see Fig. .18) one of which has been indicated at 83, while the other has been indicated at 84. The port 84 is in communication, through a passage 85 with the lower enid of the cylinder 80 while the port 83 is in communication through a passage 86 with the Aupper end of the cylinder. A'valve 81 is slidably mo-unted within the casing 82 and has annular grooves 88 and 89 designed, when the valve is shifted in one direction, to establish`communication between port 84 and the pressure port 90 and, when shifted in the opposite direction, to establish communication between port 83 and the pressure port 90. The port 90 is connected to a pressure pipe as hereinafter pointed out. f

A rod 9| (Fig. 3) extends upwardly from the piston 8| and is provided, at its upper end, with a head 92.` This head has a. stud 93 extending therefrom on which is journalled a. roller 94 adapted to work up and down within a cam slot 95 (Fig.

.14) formed within an upstanding guide plate 90 mounted on the table of the blow head. Thus it will be seen that during the upward movement of the piston 8| the cam slot will swing the head laterally after it has moved straight upward a short distance and, during the downward movement of the piston the head 92 will be swung laterally and then moved straightdownwardly. Extending from the head 92 is an arm 91 to the outer end of which is attached a cylinder 98. Air under pressure is adapted to be directed. under certain conditions to the upper end of the cylinder through a flexible pipe a portion of lwhich has been indicated at 99 and the lower end of the cylinder is provided with an air outlet in which a tubular stern |0| is adapted to slide. This stem is provided at its upper end with an enlargement |02 constituting a valve which rests normally on a seat |03 in the bottom portion of the cylinder 98, and serves to prevent under normal conditions the escape of air downwardly from the cylinder. Radial ports |04 open into the stem below the valve portion thereof so that when the valve is pushed upwardly away from its seat air will be free to escape through the ports |04 and downwardly into the stem.

A disk |05 is carried by the lower end of the stem and constitutes a blow head, this disk being provided at and near its center with outlet ports |08 in communication with the interior of the stem. Thus it will be seen that when the head 92 moves downwardly as hereinbefore described the blow head |05 will come against the upper end of the blank mold at station I and will be shifted relative to the cylinder 98 so that valve |02 will be unseated and the air under pressure within the cylinder will be discharged downwardly onto the gather which may. have been deposited in the blank mold at station I'. When the head 92 is pushed upwardly it will rst move the blow head straight up away from the blank mold and then swing it to one side and on the downward movement of the head 92 this motion will be reversed. .Consequently when the blow head is in its normal position it is above but at one side of the blank mold at station I and will not interfere withthe placing of a gather downwardly into the blank mold.

shearing mechanism Upstanding from the blow head table 19 (Fig. 3) at the inner edge thereof is a pivot pin |01 securing a. spring disk lholder |08 on which is mounted a ring |09 adapted, when the blank mold is brought to position at station I, to overhang and contact with the upper end of said blank mold. The pin |01 also serves as a pivot for the intermediate portions of crossed levers ||0, each lever having one arm sharpened to constitute a shear blade I While the other arm of each lever is slotted longitudinally as at ||2 (see Fig. 1). The two slotted arms are slidably engaged by studs I3 (Fig. 1) extending from the free ends of a fork ||4 provided at one end of a stem ||5 projecting from a piston ||6. This piston is mount--A ed to slide in a cylinder ||1, said cylinder having ports ||8 and ||9 at the outer' and inner ends thereof respectively and which ports communicate with the valve casing |20. Another port |2| (Fig. 18) is arranged at one end of the valve casing |20 and another inlet port |22 is provided at the other end of the casing |20. A pressure l' inlet port |22' is located between the ends of the casing |20 and exhaust ports |20 are also provided. A valve |23 is slidably mounted in the casing |20 and, when pressure is directed through port |22 against one end of this valve said valve is shifted so as to close communication with port ||8 and pressure will be directed from line M to port H9.

The stem ||5 of piston ||6 slides within a casing |24 and this casing has opposed ports |25 and |26 (see Fig. ,18). An annular groove |21 is formed in the stem ||5 and when the piston ||0 is forced in one direction by the admission of pressure through port ||9, this stem ||5 will be moved with/the piston to bring the groove |21 into register with the two ports |25 and |26, thus to establish communication between the ports.

A spring |28 is mounted on the pivot pin 01 and bears downwardly on'the levers ||0 so as to bind them together. i

As the piston IIE is normally pressed toward the guide plate 96, the two shearing blades are normally held apart. However, when pressure is directed against the inner face of the piston ||6 so as to force it in the other direction these blades will be swung toward each other so as to shear the gather suspended therebetween, this shearing action taking place directly over the ring I 09.

Neck pin mechanism Carried by the upper portion of the standard 16 is a cylinder |29 in which a piston |30 is mounted to slide. The stem |3| of this piston projects upwardly beyond the top of the standard and is provided, at its upper end, with a head |32from the top of which extends a tapered plunger or neck pin |33. This neck pin is hollow but closed at its upper end and extending from the base portion of the plunger or neck pin are radial outlets |34 communicating with the interior of said plunger or neck pin. A bore |35 is formed in a stem |3| and has a pressure inlet port |36 while extending from the upper end of the bore is a tubular nozzle |31 extending into the hollow plunger or neck pin but spaced from the walls thereof. Thus it will be seen that air under pressure when directed into the stem |3| will be discharged upwardly against the inner walls ofthe plunger or neck pin |33 and will then ow downwardly around the nozzle |31 and out through the outlets |34. This acts as' a means for coolingthe neck portion of thepartially completed blank when the gather is packed into the blank mold.

An inlet port |38 is provided in the bottom of cylinder |29 so that when air under pressure is directed therethrough the piston |30 will be raised and the neck pin or plunger elevated into the neck ring 54 at the lower end of the mold at station I.

Operwtz'on at station I Pressure is adapted to be directed to the different ports at station I as heretofore indicated i and through a system of air conductors which will be hereinafter more fully described. When the blank mold arrives at station I in its inverted and closed position, the gather depending vfrom a punty is lowered into the blank, mold.

Referringto Fig. 18, during the downward movement of the purity it comes into contact with a lever |39 which, when depressed by the punty, will shift a punty v alve |40. This punty valve controls the admission of pressure from a supply to the port |22 of valve |23 and when shifted pressure will be directed to this port. Thus valve |23 will be immediately shifted longitudinally to direct pressure to the port ||9 and cylinder H1, and the piston in said cylinder will be shifted .outwardly and, cause the shearing blades to be quickly drawn together to sever the supported gather. Immediately subsequent to this severing action the groove |21 establishes communication between the pressure supply through the ports |25 and |26 and causes the pressure to be distributed to one end of the valve casing 82 and to the port |2|. vThe pressure directed into Aport 2| will restore the Valve 23 to its initial position and will direct pressure through port I8 against the outer face of the piston ||6 so that said piston and its stem ||5 will be shifted inwardly to their first positions. The pressure directed into the end of the valve casing 82 will shift the valve 81 out of its normal position so as to direct pressure through the valve casing by -way of groove 88 into the upper end of the cylinder 80, thus to force the piston 8| downwardly. Obviously the shearing action will be almost instantaneous and will take place before the blow head can be lowered. As the blow head is lowered by the downward movement of piston 8| the various parts will operate as hereinafter pointed out, the disk |05 coming against the ring |09 so that pressure will be promptly directed downwardly on to the gather. This gather will be packed about the neck pin or plunger |33 which, previously has been elevated into the neck ring at the lower end of the mold. It is of course to be Aunderstood that the blank mold is so positioned on the blank table that it will be supported in proper position to receive the neck pin or plunger and to be engaged by the'blow head at station I.

The cylinder |29 has an inlet port |4| and this port as well as the port |38 are in communication with certain pressure conductors as will be hereinafter described so that the neck pin or plunger will be withdrawn from the neck ring at station I immediately after the packing of the gather about said neck pin or plunger and just prior to the movement of the blank mold from station I to station II.

Blank blowing mechanism The blank blowing mechanism may be at station II on a standard |42 (see Fig. f1) supporting a table |43 to which is connected a cylinder |44, this cylinder being provided with a port |45 at the bottom thereof and another port |46 at the top thereof. A piston |41 is mounted to slide within the cylinder and has a stem |48 projecting upwardly therefrom and carrying a blow head |49 having a central bore |50. Slidably mounted within this bore is a stem |5| extending from 'a valve |52 and this valve is adapted normally to press against a seat at the lower end of the bore |50. A port |53 is designed to direct pressure into the blow head and below the valve 52. The stem |5|.of the valve has a passage |54 extending from the upper end thereof to av point closeto the valve |52 and radical ports |55 are formed in this stem |5| closeto the valve. When the valve is seated by the pressure of air thereagainst from port |53 the ports |55 will be closed. Disk |58 is connected to the upper end of the valve stern |5| and a spring |51 serves to hold this disk normally elevated and the valve |52 normally on its seat. However, when the blow head is elevated so that the disk |58 will come against the neckr rings of the blank mold at station II, the blow head |49 -will move upwardly against the disk |56 and cause the valve |52 to be unseated so that pressure will thus pass from the port |53 through the radial ports |55. and the passage |54 and thence into the recess in the blank which had been formed at station I by the neck pin or plunger. `Consequently the gather will be initially blown.

For the purpose of finishing the upper end of the blank at station II and also limiting the upward movement of the blown gather, a bale disk |58 (Fig. 4) isconnected to th'e lower end of the stem |59 and a piston |60. This piston is mounted to slide within a cylinder |6| attached to the upper end of a post |62, which post is adjustably connected to the standard |42. The cylinder |6| has a port |63 at its upper end and another port |64 at its lower end, and when inafter described, as soon as the blank mold stops at station II.

A Blow table The blow table 5, (Figs. la and 2a) which is mounted for rotation on a stand or pedestal 4 is spaced from the blank table 3 and is provided atits periphery with a series of mold bottoms |65 equal in number to the number of blow molds assembled with the table. In the present instance six blow molds have been illustrated, but it is to be understood that this number may be increased .or reduced if desired. The two tables are adapted to rotate in unison by means of mechanism hereinafter more fully described so that each time a blank is brought to positionl at station III and while said blank is being suspended solely by the neck rings of the blank mold, a mold bottom |65 is brought to position under the supported blank and an open blow mold is brought to position to grip the suspended blank, this gripping action taking place immediately prior to the release of the blank from the neck ring members of the blank mold. In order that this operation may take place it is necessary that the members of the blank mold members and the members of the blow mold be coupled to occupy positions concentric with a common center, during the transfer of the blank from one table to the other.

The blow molds, where six of them are used, are adapted successively to assume every one of six stations indicated respectively at I', II', III', IV', V', VI. Station I is located at the point of transfer and the other stations are disposed successively in counter-clockwise arrangement about the table 5. As all of the blow molds are of the same construction, it is deemed necessary to describe only one of them in detain/it being understood that each blow mold passes successively to all of the stations of the blow table and returns to station I' after it has completed one cycle.

Referring to Figs. la and 2a.l one of the mold bottoms |65, as before stated, is provided for each blow mold, these bottoms being adapted to assume positions successively under the blanks successively brought to the point of transfer. Mounted on the table 5 at regular intervals are brackets |66 each of which has pivotally connected lto the outer end portion thereof arms |61 extending from the respective members |60 of the blow mold. Guide rods |69 are carried by the bracket and slidably mounted on these rods is a cross head |10 having a centering recess |1| adapted, when the cross head is in its outermost position relative to the bracket -to receive a centering lug |12 extending inwardly from thebracket. The cross head has a. roller |13 on its upper face and slidably mounted in the sides of the cross head are links |14 the outer ends of which are pivotally attached to the respective arms |61. Springs |15 are mounted on these links and are adapted when the cross head `is-pressed outwardly to thrust against the links and press the members of the blow mold together. A lpush cam |16 is xedly mounted above a table and extends from station I to station IV and when the blow mold is passing from station I' to station IV- the roller |13 will travel along the periphery of this push cam so as to hold the members of the blow mold closed together tightly. 4

Fixedly mounted above thc blow table so as to extend from statibns IV to I is a pull cam |11 designed to receive the' roller |13 as it leaves station IV' and gradually pull said roller inwardly as it passes to the next two stations V and VI', this pulling action serving to pull the members of the blow mold gradually to open positions until, when the blow mold reaches and passes station VI the members of the blow mold are drawn back close to the periphery of the blow table so that they can move readily into position at station I without coming into contact with the blank mold and the blank which have been brought to station III of the blank table. As soon as the blow mold reaches station I the roller |13 will pass oiT of the end of pull cam |11 and into the path of setting mechanism provided therefor.

Setting mechanism cam |11 at station I it arrives in position in the path of this button so that when pressure is at this time directed from port against the piston |8| the button |83 will be pressed outwardly against the roller and cause the cross head |10 to slide outwardly along its guide rods |69 and until it comes against the outer portion of the bracket |66. This action will cause the members of the blow mold to swing together, under the neck ring sections of the blank mold and about that portion of the blank which has been released from engagement with the members of the blank mold. This outward movement of the cross head |10 also brings the roller |13 into position where it -can pass into engagement with the periphery of the push cam |16 whenthe blow mold begins to leave its station 1'.

Finishing apparatus The blow mold when it leaves station I' carries the blank to station II' where it is held rmly in the blow mold and then passes to station III. At station III the blowing of the blank is completed by the use of a special blow head provided for that purpose. Referring to Figs. la and 5, a standard |84 is mounted on the base at station III' and supports a table |85 to whicha post |86 is secured. Adjust-ably mounted on this postis a cylinder |81 having ports |88 and |89 inthe top and bottom thereof respectively and which are adapted to receive pressure as hereinafter pointed out. A piston is slidably mounted in the cylinder and has a stem |9| projecting downwardly therefrom and connected, at its lower end, to a blow head |92. This blow head has a ,pressure port |93 opening thereinto and belowthe pressure port is a bore in which isI slidably mounted the stem |94 o-f a valve |95. This stem has a passage extending thereinto from its lower end and radiating from the upper end of the passage are ports |96 located under the valve so that when the valve is seated communication will be closed between these ports and the pressure port |93. A

disk |91 is slidably mounted in the lower portion of the blow head and moves` with the stem of the valve, there being a nozzle |98 projecting downwardly from the center of the disk, the passage in the valve stem extending through the nozzle. A washer |99 preferably of asbestos is seated on the bottom face of the disk |91 and extends around the nozzle |98. It will be apparent that when 'pressure is directed on to the upper face of the piston |90, the blow head will be lowered so that the washer |99 will come against the mouth of the blank held in the mold at station III and the nozzle |98 will project into the blank. The pressure of the washer on the blank will cause the valve |95 to be unseated so that pressure will pass from port |93 through the passage in the valve stem and through the nozzle into the blank.

'Leakage of air from the blank is prevented by the washer |99. When pressure is directed against the bottom of the piston |90 said piston will be raised and the blow head removed from nections with the post and these links are in turnpivoted to the stem 202 of a piston 203. This piston is slidably mounted in a cylinder 204 mounted on the table |85 and the said cylinder is provided at its ends with ports 205 and 206 respectively. Thus when the blow mold arrives at station III' pressure will be instantly directed, as hereinafter described through port 205, thereby forcing the piston 203 inwardly so that the stem of the piston will push through the toggle links 20| against the rear ends of the jaws 200 and cause the other ends of the jaws to swing towards each other. Thus the jaws will receive between them a clamp upon the free longitudinal edge portions of" the members of the blow mold and will hold said members securely together so that they will not push apart when subjected to internal pressure. Immediately after the completion of the blowing operation the piston 203 will be moved outwardly and the clamping jaws disengaged from the blow mold, this action taking place just prior to the movement of the blow mold away from station III.

Delivery mechanism The delivery of the finished articles may advantageously take place at station V in which case the station IV' is an idle station, permitting the article to partly cool in the blow mold. Delivery' of the article may be facilitated by the provision of a suitable takeout mechanism of any approved type, such takeout mechanism not forming any part of the present invention. As illustrated herein, however, the takeout mechanism may include a valve casing 200 (see Fig. 18) at station V', which casing has a pressure inlet 209 and spaced outlet ports 2|0 and 2li. End ports 2|2 and 2|3 are provided in the casing and a valve 2|6 having a spaced annular groove 2|5 is slidably mounted therein. A cylinder 2|6 is located above the casing and-slidably mounted therein is a piston 2|1 having a stem 2I8 which projects beyond the outer end of the casing 2|6. A passage 2|9 extends longitudinally through the stem 2 i8 and also through the piston and mounted on the outer end of the stem is a cylinder 220 having a port 22| which communicates constantly with the passage 2|9. Slidably mounted in the cylinder 220 is a piston 222 having an annular groove which normally maintains communication between the port 22| and an loutlet port 224. Another port 225 is provided at the bottom of the cylinder 220. The stem 226 of the piston extends downwardly beyond the cylinder 220, and carries a pair of ware-gripping members of suitable construction.

As the blow mold with the finished bottle in it stops at station V', air from line H (Fig. 18) shifts valve 2|4 to the left, permitting the flow of air 4from line M through line N to the underside of piston 222, raising the piston in its cylinder 220. This lifting movement causes the gripping members to grip andlift the ware off the blow mold bottom plate |65. At the end of the upward movement of the piston 222, the passage 2|9 is uncovered, admitting air from line N through cylinder 220 to the rear end of cylinder 2I6, forcing the piston 2|1 therein outwardly to move the ware-gripping members and bottle laterally away from the mold. At the end of said outward travel, the cylinder 220 strikes valve stem 24| in casing 240, shifting said valve to admit air from line M to line K to reverse valves 2 I4, thus reversing the movement of the takeout to lower the piston v222 and its gripping head to deposit the bottle on a conveyor 245 (see Fig. la), which may be intermittently operated by means of a piston 253 (Fig. 18) working in a cylinder supplied with air by lines O and P connected respectively to ports 326 and 325 of the table turning control valve 3|8.

Blow table controlling valves Fixedly mounted'above the button |83 is a valve casing 258 (see Fig. 2a) and slidably mounted in this casing is a poppet valve 259 (see Fig. 18) the stem of which projects downwardly into the path of the tapered button |03. This valve casing has a pressure port 26| and an outlet port 260, the two ports being normally out of communication. However, when the button is thrust outwardly so as to cause the blow mold to engage a blank delivered to station I the button will lift the poppet valve and establish communication between the pressure port and the outlet port.

Connected to the stand or pedestal 4 below the blow table at station I' is a valve casing 262 (Fig. 2a) this casingy having opposed ports 263 and 266 (Fig. 18) which normally communicate through an annular groove 265 formed ina valve 266. A

pressure port 261 is provided at one end of the valve casing. The valve projects from the other end of this casing and carries a roller 268 which is adapted to be successively engaged by a series of cams 269 (see Fig. 17) on the hub portion of the blow table, one of these cams being provided for each blow mold. A longitudinal bore 2 |10 extends into the valve 266 and has a radial port 21|. Each time one of the cams 269 comes against the roller 268, the valve 266 will be pressed outwardly, thereby closing communication between the opposed ports 260 and bringing the port 21| in cornmunication with one of the opposed ports so that pressure will be directed thereto from the port 261 for the purpose hereinafter pointed out.

Mounted adjacent the cylinder |18 is a valve casing 212 (Figs. 2a and 18) having end ports 213 and 214, a central pressure port 215, space outlet ports 216 and 211 and exhaust ports 218 and 219. The outlet ports 216 and 211 are in communication with the end ports |16 and |90 respectively of the -cated at 28| (Figs. 2 and 2a).

cylinder |18. A valve 280 is slidably mounted in the casing 212 and is provided with spaced reduced portions extending annularly` therein.

The driving mechanism for the tables 3 and 5 may include a gear 28| formed on or secured to the periphery thereof, the two gears being indi- Both gears constantly mesh with an intermediate gear 282 (Figs. 1 and la) arranged between the two tables at stations III and I'. The gear 282 (Figs. 2 and 2a) is keyed or otherwise secured to the upper end of a shaft 283 which is journaled at its lower end in a bearing 284 on the base The lower portion of the shaftis arranged in a housing 285 on. the base and mounted to reciprocate within this: housing is a rack bar 286 the free end of which is beveled at the top as shown at 281 (see Fig. 18).

A gear 288 is feathered on the shaft 283 and is coupled as at 289 to a sleeve 290 mounted to slide on the upper portion of the shaft and guided within the housing 285.

The upper portion'of the housing is formed -with a cylinder 29| in which a piston 292 is adapted to reciprocate. This cylinder has a port293 at its upper end and another port 294 at its lower end. These two ports are connected to the (pressure 'system as hereinafter pointed out.

Connected to the upper end of the sleeve 290 is a cross head 295 designed to move upwardly and downwardly with the sleeve when actuated by the piston and attached to the outer ends of this cross head are combined bolts and valves 296 and 291 which are slidably mounted within bores 298 and 299 respectively in outstanding arms 300 which constitute bearings for the gear 282. 'I'hese outstanding arms are connected to the housing 285 by means of standards 30|. The combined bolt and valve 296 has an annular groove 302 and a similar .groove 303 is formed in the combined bolt and valve 291. Opposed ports 304 are formed in the outstanding arm at opposite portions of the bore 298 and opposed ports 305 open into the bore 299. Thus when the combined bolts and valves are moved upwardly and downwardly they will momentarily establish communication between the ports 304 and between the ports 305 respectively. When the bolts are moved upwardly, which action takes place as soon as the two tables come to a stop, they will enter openings formed in the peripheral portions of the tables so as to lock the tables against movement. These openings are so located that each time one of the blank molds is brought to station III and one of the blow molds is brought to station I' certain of the openings will be in position to receive, and will receive the bolts.

The rack bar 286 connected to or formed with the stem 301' of a piston 308 (see Figs. 1 and 18). This piston is designed to reciprocate within a cylinder 309 mounted on the base between the stations II and I. Back of the cylinder is arranged a supplemental valve casi ing 3| 0 (Fig. 18) having a pressure port 3| at its back end while at the side of this supplemental valve casing are provided spaced outlet ports 3|2 and 3|3 and an exhaust port 3|4. A valve 3 5 is slidably mounted in the supplemental casing 3|0 and has an annular groove 3|6 in communication with a longitudinal bore' extending into the valve from the pressure end thereof. A stem 3|1 projects from the valve and into the cylinder 309 so that when the piston 308 is moved backward it will strike the stem and shift the valve 3|5 to establish pressure between the ports 3| and 3|2 and to open the exhaust 3|4. Under normal conditions communication is established between the port 3| I, groove 3|6 and port 3|3.

Arranged adjacent the cylinder 309 is a valve casing 3| 8 having an intermediate pressure port 3|9, end ports 320 and 32| and spaced outlet ports 322 and 323. A valve 324 is mounted for reciprocation in this casing and has spaced reduced portions so that when pressure is directed from port 320 against the valve the pressure port 3|9 will be placed in communication without' outlet port 322, and when the valve is Vshifted in the opposite direction pressure will be directed from port 3|9 to 323. The port 322 is in communication with a back port 325 in the cylinder 309 while the port 323 is in communication with aA front port 326 in said cylinder 309.

The beveled end 281 of the rack bar is adapted, when said rack bar is shifted forwardly by the piston 308 to move under and lift a poppet valve 326', thus to establish communication between a pressure port 321 and an outlet port 328 in the casing 329 of the valve. I

Mounted on the base between stations I and II is the casing 329' of a controlling valve 330. This casing has end ports 33| and 332, and intermediate pressure port 333 and spaced outlet ports 334 and 335. 'Ihus when pressure is directed against one end of the valve 330'from port 332 the pressure port 333 will be placed in communication with outlet port 335 and, when the motion of the valve is reversed the pressure port 333 will be placed in communication with outlet port 334.

, Pressure system The various pistons, valves, blow heads, etc., are adapted to be supplied with air under pressure from a pressure supply pipe M. By referring to the diagram (Fig. 18) it will be seen that `this pressure line M extends to one of the ports of the punty valve H40, to the port 90 of the valve casing 82, to the plunger |32, to port |25 of casing 824,' to inlet to valve casing |20, to port 25 in casing 2|, to port 65 in casing 64, tofport 321 in casing 329, .to the port 333 in valve casing 329', to port 3|9 in valve 'casing 3|8, and to port 3|| in valve casing 3|0. 'I'he main supply line then extends to certain of the .apparatus `on and adjacent the blow table and communicates with the port 261 in casing 262, with port 26| in valve casing 258, with port 215 in valve casing 212, with the blow head |92, with the port'239 in valve casing 238 and, with port 209 in valve casing 208. 'I'his pressure is constant in the various valve casings mentioned and where it comes against the end of a valve it holds saidI valve normally unseated from the outlet port as shown, for example, at casing 2|, casing 3|0, casing 262,and casing 238. Constant pressure is maintained in the plunger |32 and blow head |92, but, obviously, is not released therefrom until this blow head is shifted out of its normal position as has hereinbefore been described.

In addition to the pressure line M there are various other pressure lines which are designed during certain stages of the operation to direct pressure against certain parts of the apparatus from the pressure line M, thereby to produce the .various operationsin accurately timed succession.

A line A connects the upper end of the cylinder 220 with the port 2|0 -in valve casing 208.

Line N connects the port 225 in the bottom of cylinder 220 with the port 2|| in casing 208.

Another line K connects the port 240 in casing 238 with the port 2|2 in casing 208.

A line H extends from the port 205 in cylinder 204, and from port |88 in cylinder |81, to the port 294 of cylinder 29|, to the port |38 of cylinder |29, to the port |45 of the cylinder |44, to port |63 of cylinder I6I, to port 335 of valve casing 329 and to one of the ports 305 of bolt valve 291.

Another line H extends from the other port 305 to port 2|3 in casing 208.

Another supplemental pressure line P extends from the port 256 in cylinder 254 and thence to port 325 in cylinder 309 and to port 322 in valve casing 3|8. Y

A line F communicates with the port |89 in cylinder |81 and with the port 206 in cylinder 204, and this line extends to the blank table and communicates with the port |64 in cylinder |5|, witlrport |46 in .cylinder |44, with the port in the top `of cylinder |29, with the port 293 in cylinder 29|, with the ports304 intersected by the bolt valve 296, with the port 320 in the valve casing 3|8, and with the port 334 in the valv casing 329'.

Another supplemental pressure line has been indicated at O, this line opening into the port 255 in cylinder 254, in port 326 in cylinder 309, and

in port 323 in valve casing 3|8.

Another supplemental pressure line has been indicated at L, this line opening into port 213 of valve casing 212, port 263 in valve casing 262,

port 15 in valve casing 64, and to a port in the outer end of cylinder 2|6.

Another supplemental pressure line has been indicated at J, and extends from the port 260 in valve casing 258 to port 14 invalve casing 64.

A supplemental line I maintains communication between port 214 in casing 212 and port 21' blow head 98, the blow head |48 and the portl 3|3 of valve casing 3|0. Another line E extends from the port 3|2 in valve casing 3|0 and opens into the port 33| in valve casing 329 and into the other end port in the valve casing 82.

An additional supplemental pressure line has been indicated at G andextends from the port.

328 in valve casing 329 to the port 332 in valve casing 329'.

General operation The operation of the various units ofthe illustrated apparatus has already been described, but in addition thereto the general operation of the machine might be described as follows:

With all parts in normal position, a charge of molten glass is deposited in the blank mold at station I and the punty Valve is depressed by the gatherer if the machine is fed by hand which allows air, under pressure, to pass fromline M to line B which leads to the end -of the valve casing |20. This moves the valve therein to position to admit air to the front of piston ||6 of cylinder |I1, which action clos'es the shear blades as already described. When piston ||6 reaches the end of its backward stroke groove |21 of stem ||5 is brought into register with port |25 of the casing |24. This passes air from supply line M to outlet line C leading to end of valve casing |20 and causes this valve to move to position to pass air to the rear of piston 6 in cylinder ||1, which then opens the shear blades.

IfV the feeding is accomplished automatically, the shears and punty trip are unnecessary, and the cycle of operations is started by admitting air to line C by means controlled by the feeding device. Line C leads to end of valve casing 82 which moves the valve therein to position to admit air to the top' of piston 8| in' cylinder 80'. This causes the piston to move downward, carrying head 92 downward, causing the blow head to swing directly over and down on to the blank mold as already described.

Line C also leads to the end of valve casing 3|8 causing the Valve therein to move to position to admit air to the front of piston to move, it backward within cylinder 309. The backward inotion of piston 308 can be controlled by throttling the exhaust therefrom. This backward stroke of piston 308 is employed as a timing means and regulates the length of time air under pressure is permitted to remain on the glass within the blank mold at station I. This timing is accomplished in the following manner:

In normal position, constant air under pressure at the rear of valve casing 3|0 holds valve.

thereby cutting off air supply to blow heads |48.

and 98 and placing this line in exhaust from port 3|4. The further backward motion of valve 3|5 brings air to register with outlet port '3|2 supplying line E with air which line E leads to end of valve casing 82 causing the Valve therein to,

When piston 308 on its4 move to position admitting air through ports 90 and-84, to the bottom of piston 8| of cylinder 80. This causes this piston to move upward and raise blow head 98 which swings upward and back to normal position.

moving the valve therein to position admitting air from supply line M to outlet line F which line F admits air to top of piston |30 of cylinder |29, causing this piston to descend and withdraw the neck pin or plunger from the molten glass in the blank mold at station I.

Line F supplies air to top of piston |41 of cylinder |44 which'causes this piston |41 to move downward, withdrawing blow h ead |48 away from ,6o Line E also leads to end of valve casing 329",

the blank mold at station II. 'I'his line F also supplies air to the under side of piston of cylinder |6|:, causing piston |60 to move upward and raise the baie plate |58 free of the mold at station II.

'Ihe line F likewise supplies air to the under side of piston |90 in cylinder |81, causing the piston to raise the blow mold blow heaclv |92 free of the mold and nished mouth at station III. 'I'he same line, F, supplies air to the front of piston 203 of cylinder 204, causing the piston to move backward and open the clamping jaws 200 and release the blow mold at station III. Air is supplied to the top of piston 292 of cylinder 29| by line F, causing piston .1292 to move downward which action shifts the gear 268 into mesh with rack 286 and causes the bolt valves 296 and 291 to -pull out of the holes provided therefor in the tables. Both tables are then readyto be advanced one step or station. It will be noted that all pistons operated by action of air through line F are vmoved simultaneously except the downward motion of piston 292 in cylinder 29| which action is preferably controlled or delayed by throttling the exhaust from beneath this piston. With register pin 296 in lowered position, groove 302 is in register with ports 304 and air from line F is permitted to pass to the end of valve casing 3|8, which causes the valve therein to move so as to admit air to the rear of piston 308 of cylinder 309, which moves piston 308 forward. The forward movement of said piston carries forward the rack 286 which is in mesh with the shiftable gear 288.

During the movement of the tables the roller 268 on the outer portion of valve 266 in casing 262 comes in contact with cam 269 on the hub of the blow mold table 5, which causes valve 266 to move backward bringing port 21| into register with outlet port 263, and allowing air to pass from supply line M to the line L which leads from port 263 to the end of valve easing 212. The valve 280 is thus moved to position to admit air to the front of piston l0! in cylinder |18 and cause the tapered push button |83 to return to normal position. This permits the poppet valve 259 in casing 258 to close and cut oi air from supply line M to line J.

Line L leads tothe end of valve .casing 64 so as to move the valve therein to position to admit air from supply line M to the rear of piston 6| of cylinder 60 which causes spool 63 to move to forward position. Line L leads to front of piston 2|1 of cylinder 2|6 'ca-using piston 2|1 to move back within its cylinder and move the taking out mechanism back. This is permitted by exhausting through passage 2| 9 in piston rod 2|8, which exhaust passes around grooved portion of piston 222 and escapes to the atmosphere by way of vent 224 in the side of cylinder 220. The returning of piston 2|1 of cylinder 2|6 and thebackward movement of cylinder 220 permits air in the rear of valve 24| in casing 230 to force said valve 24| forward. This cuts oi register of groove 240 of the valve with outlet port 240', thereby cutting oi the air supply of line K.

When the blank mold containing the charge of glass has been moved from first or lling station I to station II, the turning rack 286 and piston 308 have reached the end of their forward stroke. This brings the beveled end of the rack in contact with the projection of the valve 326 in casing 329, which lifts the valve so as to admit air from supply line M to outlet line G which leads to one errd -of valve casing 329 and moves the valve therein so as to supply air from supply line M to outlet line H. Line H operates to raise piston |30 of cylinder |29 which moves the neck pin or plunger |33 upward within the neck ring of the blank moldat station I, which mold .is

then prepared to receive another charge `of molpressed against the neck ring opens the valve therein as hereinbefore described. Line H also directs air against piston 203 which closes the clamping jaws 200, as described. The same line also directs air to piston |90 in cylinder |81 which action lowers blow head |92 at station III' and brings asbestos washer |99 to sealing position and completes the blowing operation as before pointedout. Air is directed from line H against piston 292 (see Fig. 18) which shifts the gear 288 upwardand out of mesh with rack 286 and also acts to raise the bolt valves 296 and 291 and lock the tables. valve bolt 291 causes groove 303 to pass outlet port 305 thereby allowing air to pass from the said line H to end of valve casing 208 (see Fig. 18) which moves the valve therein to position allowing air to pass from supply line M to outlet line N leading to under side of piston 222, thereby .moving the piston upward in cylinder 220. The air thus entering the cylinder 220 also and at the same time operates the plunger 234 and the gripping forks as already described.

At theJpoint where piston 222 has passed and uncovered port 22| which extends through the wall of cylinder 220, air passes through piston rod 2|8 and is admitted to rear of piston 2|1 in cylinder 2|6 causing said piston to move for@ ward in its cylinder 2|6. Air will exhaust through line L to groove 265 in valve 266. When the taking out mechanism has carried the glass article to the position directly over the conveyor, as heretofore described, the cylinder 220 comes in contact with the projectingstem of valve 24| which registers groove 240 with the outlet port 240 of valve casing 238, and permits air to pass from supply line M to outlet line K (see Fig. 18) leading to valve casing 298. This moves the valve therein to position to admit air from supply line M to outlet line A which operates to move piston 222 downward in cylinder 220, which action lowers the glass-article to the conveyor and opens' the gripping jaws. At this stage of operation the delivering mechanism remains at rest. v

The air time on piston 253 of the conveyor mechanism is the same as the air time on vpiston 308 of cylinder 309. Therefore when air enters cylinder 309 at the rear of piston 306 to cause the tables to turn, air also enters cylinder 254 through line P at the rear of pistonl 253, causing the conveyor to movey forward. Likewise, when air enters cylinder 309 at the front of piston 308 causing this piston to move back, air also enters cylinder 254 through line O in front of piston 253, causing this piston to move back. Thus it will be seen that when an article is deposited upon the conveyor by the taking out mechanism, the action of the conveyor moving forward carries the ex' tended neck portion of the article out of the path of the delivery mechanism.

The successive operations produced by the rotation of the blank table relative to its stand or pedestal have already been described, air under The upward movement of v 

